Results 101 to 110 of about 737,814 (144)

Litterfall nutrient dynamics in old-growth and second-growth Chamaecyparis obtusa var. formosana stands in Chilanshan area, Taiwan

open access: yes, 2010
枯落物是森林冠層之營養回歸土壤的重要過程之一,因此本研究以棲蘭山區臺灣扁柏(Chamaecyparis obtusa var. formosana)老熟林及天然更新次生林為對象,於2005至2007年調查枯落物量動態及落葉養分季節變化。在枯落物收集期間天然下種更新林樣區的年總枯落物量都高於老熟林。臺灣扁柏葉佔枯物物量的比例在各林分及各年間均為最大,約在79~87.8%間。落物量及養分濃度季節變化,採用廣義加法模式(Generalized Additive Models, GAMs)分析月累積雨量、月均溫、
劉俊毅, Liu, Chun-I
core  

Analysis on Litters Decomposition Value with Different Soil Depths in

open access: yes, 2012
为了探索不同深度土壤对枯落物腐解的影响差异,通过对3个刺槐林样地C1、C2、C3的野外培育试验和室内培养试验,研究分析了添加枯落物后土壤有机碳(SOC)、颗粒态有机碳(POC)和总氮(TN)周期为4个月的两个阶段的含量变化以及3个深度土样59 d的CO2累计释放量。结果表明,SOC、POC及TN在两个阶段的变化量呈增减互补趋势,其变化幅度随深度增加而减小,表明枯落物腐解速率降低;室内培养试验中,SOC组分的差异造成了CO2累计释放量为20 cm>60 cm>40 cm ...
梁宗锁, 吕海波
core  

[Chinese guideline for diagnosis and management of drug-induced liver injury (2023 version)]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi, 2023
Technology Committee on DILI Prevention and Management   +3 more
europepmc   +1 more source

北京东灵山暖温带落叶阔叶林枯立木与活立木空间分布格局

open access: yes, 2018
东灵山暖温带落叶阔叶次生林,是保存较完整的落叶阔叶次生林,其物种组成、群落结构是次生林演替过程的重要体现,也是下一步演替发生的基础。为了更好地研究其演替动态、生物多样性维持机制,以东灵山20hm~2样地为固定监测平台,分析了暖温带落叶阔叶次生林的活立木、枯立木物种组成、径级结构、空间格局。结果表明:(1)样地中DBH≥1 cm的活立木共有103702株,植株密度为5185.1株/hm~2;枯立木共有4543株,植株密度为204.9/hm~2二者均包括了分枝和萌枝的个体数。样地内DBH≥1 ...
桑卫国, 马芳, 王顺忠, 冯金朝
core  

[Histone deacetylases and alcohol-related liver disease]. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Yang Y, Yu M, Liu D, Tan Y.
europepmc   +1 more source

[Prospective study on the effects of resistance training with elastic band at home on muscle function and walking ability of severely burned children]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023
Huo T   +9 more
europepmc   +1 more source

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